Automatic valve.



110.847,182, PATBNTED MAR. 12, 1907. 1

. F. 11. JAGOBSBN.

AUTOMATIC VALVE. APPLICATION' FILED APB. 12, 1906.

jm/@Mofo d. Rifkin@ Jacen Wbb/Leona FREDERICK RICHARD JACOBSEN, OFPORTLAND, OREGON.

AUTOMATIC VALVE.

Specication of Letters Patent.

Patented March 12, 1907.

Application led April 12,1906. Serial No. 311,335.

To @ZZ whom t may concer/2,:

Be it known that i, FREDERICK RICHARD J AcoBsnN, a citizen of the UnitedStates, residing at lortland, in the county of Multnomah and State ofOregon, have invented certain new and useful improvements in AutomaticValves 5 and 1 do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to improvements in automatic valves.

The object ofthe invention is to provide a valve of this character whichis adapted to be manually operated when desired and to be automaticallyclosed when occasion requires.

A further object is to provide a valve of this character' which will besimple in construction, efficient and reliable in operation, and welladapted to the purpose for which it is designed.

l/Vith the above and other objects in view the invention consists ofcertain novel features of construction, combination, and arrangement ofparts, as will be hereinafter described and claimed.

In the accompanying drawings, Figure l is a vertical longitudinalsectional view of the valve, showingl the same open. Fig. 2 is a similarview showing the position of the parts when the valve has been manuallyclosed. Fig. 3 is a similar view showing the position of the parts whenthe same have been automatically closed, and Fig. 4 is an enlargeddetail vertical sectional view of the outer end of the main valve-stem,showing the construction of the same and' the outer end of thevalve-releasing rod.

Referring more 'particularly to the drawings, l denotes thevalve-casing, which may be of the usual or any suitable construction,having a seat 2. Adapted to be engaged with the seat 2 is a valve 3, towhich. is connected a releasing-rod 4. The releasing-rod 4 projectsoutwardly through a tubular valvestem 5, which is provided on its innerend with a coarse thread 6, adapted to engage similar threads 7 on theinner side of the valve-casing in the usual manner, whereby upon turningthe stem 5 in one direction or the other the valve 3 is engaged anddisengaged with the seat 2, thereby opening and closing the valve.

The outer end of the valve-rod 4 is pror vided with a iiari'ng head S,which is adapted l to be seated in a tapered recess 9, formed in l theouter end of the stem 5 and communil eating with the passage therein,through which the rod 4 extends. The rod 4 is normally connected to thestem 5 by the head 8, which is drawn or seated in the recess 9, and issecured therein by means of soft solder 10. While the rod and stem ofthevalve are thus connected, the stem may be turned by the usual hand-wheel12 to manually open and close the valve, as hereinbefore described.Should a fire occur while the valve is in an open position, the solder10 in the end of the valve-stem will be melted, thus releasing the headS and the rod 4 and permitting the pressure of the iiuid passing throughthe valve-casing to automatically close the valve upon its seat, thuscutting oli` the flow ofthe 'fluid after the manner of a check-valve.

A valve of this character is especially adapted for use in connectionwith gas-pipes or pipes containing any explosive fluids which might bereleased in a burning building by the melting or parting of the pipes.

From the foregoing description, taken in connection with theaccompanying drawings, the construction and operation of the inventionwill be readily understood without requiring a more extendedexplanation.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of this invention as defined by theappended claims.

Having thus described my invention, what 1 claim as new, and desire tosecure by Letters Patent, is-

l. A valve comprising a casing, a seat formed therein, a valve to engagesaid seat, a tubular valve-stein, a releasing-rod connected to saidvalve, and extending through said valve-stem, a fusible connectionbetween said rod and said valve-stem, and a handwheel on the outer endof said stem whereby said valve-stem may be manually operated to open orclose said valve, substantially as described.

2. A valve comprising a casing, a seat formed in said casing, a valve toengage said seat, a tubular valve-stem having at its outer end atapering recess, a releasing-rod con-l nected to said valve andextending through said tubular stem, a flaring head formed on IOC gg y847,182

the outer end of said rod to engage the recess my hand in presence oftwo subscribing wit in the outer end of said stem, a fusible plug tonesses. secure seid head in said recess, and means whereby saidValve-stem is manually oper- 5 ated to open and close said Valve,substan- Witnesses:

tally as described. I ROBERT Gr. MORROW,

In testimony whereof I have hereunto set BENJAMIN B. BEEKMAN.

FREDERICK RICHARD JACOBSEN.

